CN102177720B

CN102177720B - Projection display system using hierarchical temporal multiplexing of primary colors

Info

Publication number: CN102177720B
Application number: CN200980140021.0A
Authority: CN
Inventors: H·S·埃尔-古鲁里; A·马宗德; R·G·W·布朗; A·J·兰宗
Original assignee: Ostendo Technologies Inc
Current assignee: Ostendo Technologies Inc
Priority date: 2008-10-10
Filing date: 2009-10-08
Publication date: 2014-05-07
Anticipated expiration: 2029-10-08
Also published as: US20100091050A1; KR20110083638A; WO2010042771A1; JP5364790B2; EP2332338B1; TWI513324B; CN102177720A; US8098265B2; EP2332338A1; TW201019737A; JP2012505432A; KR101669015B1

Abstract

This invention describes an apparatus, methods and a system for high speed hierarchical multiplexing the native color primaries of SSL-based display systems in order to improve color quality and stability as well as brightness and the efficiency of the display system.

Description

Use the multiplexing projection display systems of grading time of primary colors color

Technical field

The present invention relates to the field of display system, and relate more specifically to have the display system based on solid state light emitter of this (native) colour gamut, this display system will show image according to the view data with target color gamut.

Background technology

Fig. 1 a illustrates typical spatial modulation optical projection system.Core such as most of spatial modulation colour projection systems of micro mirror or liquid crystal over silicon unit (LCOS) projecting apparatus (referring to the people's such as E.H. Stupp of John Wiley and Sons Ltd. in 1999 " Projection Displays ") is light pipe, and this light pipe comprises white light 110 and colour wheel 120.Colour wheel 120 comprises conventionally for optionally passing through red, green and blue { three kinds of dissimilar filters of the spectrum of R, G, B} primary colors.Recently, this colour wheel also provides optionally for reappearing predefined color set, particularly for the 4th transparent filter (clear filter) (referring to United States Patent (USP) the 6th, 910, No. 777) of grey.This four looks primary systems is similar to the cmyk color system of printer, and causes higher brightness and contrast's standard.This concept by vague generalization with the color gamut that provides five or more primary colors to strengthen to be reappeared (referring to United States Patent (USP) the 5th, 526, No. 063 and the 6th, 769, No. 772).

Yet, in all these display systems, when any special time example, only can connect one (for example, red, green or blue) in these color primary colors.Therefore, the colourity of the color filters that the color attributes of this display system is used completely in colour wheel 120 and illumination character are specified (referring to the people's such as Jansen " Visible Laser and Laser Array Sources for Projection Displays ", Proc. of SPIE Vol. 6135,2006).The color gamut that for example, can not change display system is to mate predefined standard colour gamut.As a result, display apparatus performance greatly depend on colour wheel 120 quality of the color primary-color filter of using and these primary colors aspect their colourity how close to predefined standard or target color gamut color primary colors.This may be serious restriction, particularly owing to defining and redefining now the standard of quantity like this with faster speed.

Recently, projection industry, shows industry as any other, has been driven to produce compact, low-power, high life projecting apparatus in the situation that not sacrificing display quality.This witness by the arrival of the projecting apparatus of solid-state light (SSL) source lighting such as light-emitting diode (LED) and laser diode (LD) (referring to United States Patent (USP) the 7th, 101, No. 049 and United States Patent (USP) the 7th, 334, No. 901, the disclosure of these patents is incorporated herein by reference).SSL source can provide the bright and saturated color with the higher order of magnitude life-span.Fig. 1 b illustrates the spatial modulation optical projection system of using SSL source 140.Each color primary colors in Fig. 1 b in the light pipe of illustrated optical projection system is by comprising that the single SSL equipment of specific color or the SSL of SSL equipment array 140 generate (referring to United States Patent (USP) the 7th, 101, No. 049, the 7th, 210, No. 806 and the 7th, the people's such as 334, No. 901 and Jansen " Visible Laser and Laser Array Sources for Projection Displays ", Proc. of SPIE Vol. 6135,2006).In addition, because a plurality of primary colors is provided by a plurality of light sources, so this light pipe does not need to comprise any colour wheel.In Fig. 1 b, illustrated optical projection system framework most important characteristics is in the context of the present invention: be different from the projecting apparatus with bulb and colour wheel, in such as Fig. 1 b in the projecting apparatus with a plurality of SSL of illustrated optical projection system framework, as described in the prior, can connect a more than color primary colors (referring to United States Patent (USP) the 7th simultaneously, 334, No. 901).In addition, be different from such as the arc lamp of using in illustrated most of common optical projection systems in Fig. 1 a, typically need connect for tens of seconds, SSL can open and close within than the time of a microsecond much less.

In such as Fig. 1 a, in illustrated conventional spatial modulation projecting apparatus, because the color attributes of this display is specified by the physical property of color filters completely, therefore only can control color attributes with limited manner.For example, for make display system color gamut with such as Fig. 2, (it shows and is drawn on (u', v') the predefined matches criteria of illustrated NTSC 210 or HDTV 220 the various color gamut in chrominance color spaces), for any product based on projection in monitor market, white point or brightness are important performance characteristic.Yet the chromaticity coordinate by the color gamut such as illustrated conventional spatial modulation projecting apparatus generates in Fig. 1 a by its redness, green and blue electric-wave filter defines, and can not change in the situation that not changing color filters 120 or bulb 110.Typically, such as the white point of illustrated conventional spatial modulation projecting apparatus in Fig. 1 a, can reduce contrast, dynamic range, energy conversion efficiency (wall-plug efficiency) and always realize brightness only in limited mode, to change as the setover shown image pixel gray value of each color primary colors of cost by take.In addition, usually independent each other to the control that changes these character, cause being assembled the very difficult calibration process of problem, particularly together with a plurality of character such as brightness and white point, carrying out in optimized situation.

In order to ensure display system, meet color attributes canonical parameter (such as color gamut, brightness and white point), show that industry must be in accordance with strict mass measurement when manufacturing light source 110 and color filters 120.For example, if the color gamut being obtained by color filters 120 does not contain NTSC colour gamut 210, when accurate method of color gamut mapping of color need to be utilized and may work as the wider color gamut light source using like that as illustrated in Figure 2 such as SSL source 140, still do not provide required visual quality.As illustrated in Figure 2, the

color gamut

250 and 260 that SSL source 140 provides is typically much wide than the typical commercial display system color gamut such as NTSC 210 or HDTV 220.When this colour gamut of this display system than aim colour field width when many, such as when take while using in Fig. 1 b the illustrated projection display systems framework based on SSL as target such as the business display color colour gamut of NTSC 210 and HDTV 220, utilize particular color mapping techniques this colour gamut of this display system is restricted to this target color gamut.Except the potential higher luminous flux that provides of typical

wider color gamut

250 and 260 in waste SSL source, these technology are usually also serious nonlinear and usually need the custom fitting to each specific SSL equipment.

Summary of the invention

The ability (referring to United States Patent (USP) the 7th, 334, No. 901) of a plurality of color primary colors running (on-cycle) simultaneities that classification polychrome primary colors multiplex system of the present invention utilization is provided by the projection display systems based on SSL is to remove all these rigid property.Use classification color primary colors multiplex system of the present invention, for the multiple SSL source that may strictly not follow predefined standard, can easily provide the display system of standard compliant target color gamut, white point and brightness.In addition, classification color primary colors multiplex system of the present invention can also be for maximizing display system ability, and particularly brightness and energy conversion efficiency, follow required target color gamut and white point standard simultaneously completely.

The core of many projection display systems is spatial light modulator (SLM), such as micro mirror and LCOS equipment (referring to United States Patent (USP) the 5th, 535, No. 047 and the 4th, 596, No. 992).Use such as the reflection type SLM equipment of micro mirror or LCOS equipment, such as Fig. 1 a and 1b in illustrated these optical projection systems, the reflective condition of pixel described in each can the expectation turn-on/off state based on forming each SLM device pixel of digital picture be digitally set.Projected image is by use, to have in the SLM device space of image pixel gradation data of each color primary colors order to modulate each display system color primary colors and form.Typically use pulse-width modulation (PWM) technology to convert the pixel grey scale data of each color primary colors (it is typically expressed as multi-bit word) to serial bit stream.These PWM positions are for arranging the turn-on/off state of SLM device pixel.Typically, the DID being associated with each color primary colors is sequentially modulated in time-multiplexed mode by SLM equipment.Each primary colors of this combination PWM technology time-multiplexed for create spatial modulation 1-bit plane for each color primary colors, this spatial modulation 1-bit plane be loaded in this SLM equipment, so that the turn-on/off state of its each pixel to be set, express each image pixel color primary colors different gray values (referring to United States Patent (USP) the 5th, 280, No. 277).Yet when using SSL source in all frameworks as shown in Figure 1 b, the color primary colors that this SSL source generates typically will have the colorimetric properties that the color gamut required from most of business display systems is as illustrated in Figure 2 different.As a result, can not use the routine of this color primary colors (meaning this color primary colors that SSL equipment generates) of these display systems time-multiplexed.In addition, as previously explained, the color gamut mapping scheme in the current optical projection system being used in based on SSL is inflexible and inefficient.Therefore the object of the invention is to, describe a kind of can be for improvement of the chromaticity of display system and the time-multiplexed system of classification polychrome of stability and efficiency in the optical projection system based on SSL.

Accompanying drawing explanation

In each figure of accompanying drawing, by example but not illustrate the present invention by restriction, similar Reference numeral refers to similar element in the accompanying drawings.

Fig. 1 a illustrates the light path of the SLM projecting apparatus based on colour wheel.

Fig. 1 b illustrates the light path of the SLM projecting apparatus based on SSL.

Fig. 2 illustrates the typical target colour gamut relevant with the color gamut ability of SSL equipment.

Fig. 3 illustrates the block diagram that is incorporated to the multiplexing SLM projecting apparatus based on SSL of grading time of the present invention.

Fig. 4 illustrates the operating time line that is incorporated to the multiplexing SLM projecting apparatus based on SSL of grading time of the present invention.

Embodiment

The preferred embodiments of the present invention provide this color primary colors for the multiplexing display system based on SSL hierarchically to improve the chromaticity of this display system and device, the method and system of stability and efficiency.This target is by utilizing the high speed ON/OFF switching capability of this SSL equipment and the simultaneity that may turn round of different SSL primary colors to realize through following steps: hierarchically this color primary colors of multiplexing SSL equipment is to synthesize new color set of color primaries, and then time-multiplexed new synthetic color primary colors will be modulated to create the spatial color field of projected image to create by this SLM equipment.In the first level of this classification, this primary colors of SSL equipment is simultaneously time-multiplexed to distribute the proper proportion of different these primary colors of SSL to create synthetic color set of color primaries.Therefore each synthetic color primary colors is generated by the time-multiplexed pattern of high speed while of this color of SSL primary colors.In the second level of this classification, each in the pattern of these concurrent multiplexings is considered as meaning to single time-multiplexed in this color of SSL primary colors of new synthetic color primary colors.Then by this color of SSL primary colors these simultaneously time-multiplexed further carry out together time-multiplexedly to create specific white point, will represent the gray value with respect to the Pixel of Digital Image of this specific white point with this synthetic color primary colors.Then, can be in the 3rd level of this classification adjust in proportion this color of (scale) SSL primary colors therefore in the second level, create time-multiplexed, the luminous flux increasing with the simultaneity of utilizing due to this SSL primary colors increases the brightness of display system.

According to the following detailed description of the preferred embodiments of the present invention of carrying out with reference to accompanying drawing, the additional object of various aspects of the present invention and advantage will become obvious.In this, in following detailed description in detail of the present invention, the quote special characteristic, structure or the characteristic that mean to describe of " embodiment " or " embodiment " are comprised at least one embodiment of the present invention in conjunction with the embodiments.In this detailed description, the appearance of term " in one embodiment " everywhere needn't all refer to identical embodiment.

The time-multiplexed system of classification polychrome primary colors in the projection display systems being used in based on SSL has been described here.In the following description, many specific detail have been enumerated for illustrative purposes to provide thorough understanding of the present invention.Yet, for those skilled in the art, being apparent that, the present invention can put into practice under the situation with different specific detail.In other examples, with block diagram form, structure and equipment are shown to avoid making the present invention hard to understand.

In Fig. 3, in the context of projection display systems, the form with functional block diagram illustrates the time-multiplexed system of classification polychrome primary colors described herein.Similar with the illustrated optical projection system based on SSL in Fig. 1 b, the optical projection system 300 that is incorporated to the time-multiplexed system of classification polychrome primary colors of the present invention comprises the SLM equipment 310 by the set illumination of SSL equipment 322,324 and 326, and each SSL equipment 322,324 and 326 provides in this color primary colors of optical projection system 300.Then the light being generated by the set of SSL equipment 322,324 and 326 forwarded and be coupled on the optical surface of SLM equipment 310 by illuminating and optical apparatus 330 collimations, combination.Then this coupling light is carried out spatial modulation and is then exaggerated Yi You projection optical equipment 340 by SLM equipment 310 forming display projected image 350.The operation core that is incorporated to the optical projection system 300 of the time-multiplexed system of classification polychrome primary colors of the present invention is stepped multiplexing functional block 360, and this stepped multiplexing functional block 360 generates the high speed ON/OFF signal 365 of the ON/OFF work period of controlling SSL equipment 322,324 and 326 and the display image data that are expressed as synthetic color primary colors are provided to PWM modulation function piece 390.The display image data transaction that PWM modulation function piece 390 provides stepped multiplexing functional block 360 becomes spatial modulation 1-bit plane, and then this spatial modulation 1-bit plane is coupled in SLM equipment 310 to control the on-state of its each pixel.

In Fig. 4, illustrate the timeline of the operation of stepped multiplexing functional block 360.The view data of expressing according to the target color gamut color primary colors of all NTSC as illustrated in Figure 2 210 or HDTV 220 will be inputted 361 as view data and offer stepped multiplexing functional block 360, this view data input 361 frame period signal that typically will merge to image adds a large amount of multi-bit word, and each multi-bit word is expressed the gray value for each color primary colors of target color gamut.

Numeral input

362 and 363 is also provided for stepped multiplexing functional block 360 as a time input,

numeral input

362 and 363 specify respectively SSL equipment 322,324 and 326 at (u', the hue coordinate of the hue coordinate v') or in (x, y) color space and target color gamut color primary colors.Value based on

numeral input

362 and 363, stepped multiplexing functional block 360 work period when being calculated as each required SSL equipment 322,324 of target color gamut color primary colors synthetic as outside input 363 appointments and 326.In the time of SSL equipment 322,324 and 326 calculate, the work period is represented as the level of the required SSL equipment simultaneity of synthetic target color gamut color primary colors.When calculating, this clock signal 365 is provided for SSL equipment 322,324 and 326 to control work period operation in each SSL equipment 322,324 and 326 during illustrated each synthetic color slot cycle 420 in Fig. 4 for creating clock signal 365 work period.

With reference to Fig. 4, typically handle is divided into synthetic color slot cycle 420 by the picture frame 410 with 60Hz or 120Hz operation in most of display systems, these synthetic color slot cycle 420 representatives will be loaded on the duration in SLM equipment 310 spatial modulation 1-bit field therebetween.Typically, the number of the synthetic color slot cycle 420 within the duration of picture frame 410 is multiplied by the number (2 of PWM position by the number that equals synthetic primary colors ⁿ-1), wherein N represents to comprise the number of position of each multi-bit word of representative image grey scale pixel value.By the target color gamut of expressing with three color primary colors of all NTSC as illustrated in Figure 2 210 or HDTV 220, format most of DIDs, wherein with 8-position word table, reach image pixel gray value, this will make the illustrated typical image frame period 420 in Fig. 4 comprise 765 color slot cycles 420.For example, when being incorporated to the time-multiplexed optical projection system 300 of classification polychrome primary colors of the present invention and operating with 60Hz picture frame period 420, the typical duration of synthetic color slot cycle 420 will be approximately 21.8 microseconds.How to one of skill in the art will appreciate that for the color primary colors that uses greater number, compared with the display system 300 of the position of the representative image grey scale pixel value of hi-vision frame period rate and/or higher number, obtain the design parameter of picture frame period 420.

With reference to Fig. 4, will synthesize color slot cycle 420 Further Divisions and become a large amount of SSL work periods 430, wherein the latter represents the turn-on/off state duration of SSL equipment 322,324 and 326.The number of SSL work period 430 in each color slot cycle 420 synthesizes accuracy required in target color gamut color primary colors 460 by this color primary colors 440 with SSL equipment 322,324 and 326 to be determined, and by the maximum constraint upper limit of the ON/OFF switch speed of SSL equipment 322,324 and 326.For example, if the maximum of the ON/OFF switch speed of SSL equipment 322,324 and 326 is 1-MHz, it equals the minimum SSL work period 430 of a microsecond, can to be incorporated to maximum number be 21 SSL work periods 430 to synthetic color slot cycle 420, and this will allow this color primary colors 440 with SSL equipment 322,324 and 326 to express the ability of synthesizing target color gamut color primary colors 460 to be less than 2.4% accuracy.In practice, for the ease of the Digital Logic realization of stepped multiplexing functional block 360, the number of SSL work period 430 will be about 2 ⁿ, and in the situation of previous example, the number of the SSL work period 430 in each color slot cycle 420 will be 16 cycles.

Although the diagram of Fig. 4 shows the timeline of the operation of the stepped multiplexing functional block 360 when synthesizing three target color gamut color primary colors with three SSL color primary colors, but when being used more than three SSL color primary colors and can be when more than three target color gamut color primary colors, the operating principle of stepped multiplexing functional block 360 is applicable equally.The most important aspect of the operation of stepped multiplexing functional block 360 is, target color gamut color primary colors will have to be completely contained in the formed colour gamut of SSL color primary colors.For example, in several application special concern be except red, green and blueness, also use such as a plurality of color primary colors of cyan (C), yellow (Y), magenta (M) and add white (K) as color primary colors to adjust the saturation levels of master color primary colors, all these can complete by the embodiment of stepped multiplexing functional block 360.In this situation example, by synthetic this target primary colors of work period when adjusting SSL equipment 322,324 and 326; For example, synthetic C-primary colors time slot will be incorporated to minimum green SSL primary colors contribution, and similarly, synthetic K-primary colors time slot is by the suitably contribution being simultaneously incorporated to from required all three the SSL equipment 322,324 of the required white for generation K-primary colors and 326.

In being incorporated to an embodiment of the time-multiplexed optical projection system 300 of classification polychrome primary colors of the present invention, except generating the control signal 365 time-multiplexed and operation simultaneously of domination SSL equipment 322,324 and 326, stepped multiplexing functional block 360 also makes the operation of SSL equipment 322,324 and 326 synchronize with the operation of PWM translation function piece 390.Particularly, stepped multiplexing functional block 360 will provide input 366 to PWM translation function piece 390, and this input 366 is incorporated to: (1) represents the SYNC signal of the sequential of color slot cycle 420; (2) for each pixel of digital picture, for each 1-place value (1-bit plane) of the gray scale multi-bit word of each synthetic target color gamut color primary colors; And (3) are for the number of the color slot cycle 420 of this 1-bit plane distribution.In an embodiment of stepped multiplexing functional block 360, represent that the input 366 of n significance bit of the multidigit gray value of specific color primary colors adds 2 by this 1-place value (0 or 1) that is incorporated to each Pixel of Digital Image ⁿthe distribution of individual color slot cycle 420 (specifying the number of color slot cycle to control the digital control word of the reflective condition of each pixel to apply the 1-bit field of the image pixel turn-on/off state being transmitted).In response to input 366, PWM functional block 390, color slot cycle 420 durations at assigned number are synchronously forwarded to SLM equipment 310 by the 1-bit field value of stepped multiplexing functional block 360 outputs.

The 1-bit plane in Fig. 4, at least two significance bits in the gray scale multi-bit word of green (G) primary colors of the target color gamut with synthetic being associated is illustrated as respectively 472 and 474.As illustrated in Fig. 4, the least significant bit of this gray value will need a color slot cycle 420, during this color slot cycle 420, stepped multiplexing functional block 360 will be to each

SSL equipment

322, 324 and 326 distribute and order in order to synthesize the proper number of required work period 430 of target color gamut G-primary colors and to export these values to SSL equipment 322 via

interface signal

365, 324 and 326, and illustrate in 1-bit field value 472(Fig. 4 that simultaneously handle is associated with order) export PWM functional block 390 to, with color slot cycle 420 durations at assigned number, the 1-bit field value of being exported is synchronously forwarded to SLM equipment 310, 420 duration of color slot cycle of the number of assigning will equal only 420 duration of color slot cycle in this case.Fig. 4 also illustrates the sample situation of the second least significant bit of the gray scale multi-bit word of red (R) primary colors of synthetic target color gamut, stepped multiplexing functional block 360 will be to each SSL equipment 322 in this case, 324 and 326 distribute and order in order to synthesize the proper number of required work period 420 of target color gamut R-primary colors and to export these values to SSL equipment 322 via

interface signal

365, 324 and 326, and will will in the 1-bit field value 474(Fig. 4 being associated with order, illustrate simultaneously) export PWM functional block 390 to, with color slot cycle 420 durations at assigned number, the 1-bit field value of being exported is synchronously forwarded to SLM equipment 310, 420 duration of color slot cycle of the number of assigning will equal two 420 duration of color slot cycle in this case.How to one of skill in the art will appreciate that the higher significance bit for the gray value of each target color gamut color primary colors realizes the standard of summarizing in above example.

In another embodiment of optical projection system 300 of the present invention, stepped multiplexing functional block 360 will be incorporated in order to reduce by distributing to that the color slot cycle 420 compared with high significance bit of grey scale pixel value clusters and the member of the possible time speckle that may cause.In such as Fig. 1 a in the current projection display systems of illustrated use colour wheel, the 1-bit plane of specific color primary colors typically clusters within the duration of this color filters, this usually causes significant projected image speckle and pseudomorphism, particularly in high-brghtness picture images.The image speckle of the type is typically caused by the time-multiplexed aspect of the color order character being associated with colour wheel and the clustering of 1-bit plane being associated with the gray level bit of each color primary colors.In this embodiment, the optical projection system 300 that is incorporated to stepped multiplexing functional block 360 of the present invention is by the distributing to each color primary colors in abutting connection with color slot cycle 420 and avoid the color time slot of the type to cluster of maximum number, and by the color slot cycle 420 that interweaves in time distributed to prevent from distributing to excessively the approaching of color slot cycle 420 of identical synthetic color primary colors.For example, when the maximum number in abutting connection with color slot cycle 420 is limited to 16 time slots, stepped multiplexing functional block 360, by the number of the required color slot cycle 420 of the gray scale word bit higher than the 4th least significant bit being divided in clustering of 16 time slots and the clustering of 16 time slots of the different synthetic color primary colors 460 that then interweave, makes the resulting distribution for any single synthetic color primary colors be not more than 16 time slots.In this example, stepped multiplexing functional block 360 is given all gray scale word bits up to the 4th least significant bit by the standard based on discussing in earlier paragraphs the number assignment of color slot cycle 420, but the 5th least significant bit that is the gray scale word bit of each synthetic color primary colors 460 is distributed to 2 16-time slot groups, for the 6th least significant bit of the gray scale word bit of each synthetic color primary colors 460 distributes 4 16-time slot groups and be 8 16-time slot groups of highest significant position distribution of the gray scale word bit of each synthetic color primary colors 460, and then will interweave these 16-time slot allocation, make in abutting connection with color time slot allocation, to be no more than 16 time slots for each synthetic color primary colors 460.For this restriction of the number in abutting connection with color time slot allocation of each synthetic color primary colors add the full-size groups of distributing (being 16-time slot in the situation of above example) of different synthetic color primary colors 460 are interweaved will be owing to increasing the time color uniformity increase realizing by the time-multiplexed speed of synthetic color primary colors 460 and reduce widely temporal image speckle.

In another embodiment, in order to utilize the high speed switching capability of SSL equipment 322,324 and 326 further to improve the contrast of optical projection system 300, the optical projection system 300 that is incorporated to stepped multiplexing functional block 360 of the present invention will check the 1-bit field being associated with each color slot cycle 420 and will during these color slot cycles 420, insert black primary colors (BLK-primary colors) in the situation that all 1-position pixel value of the 1-bit field being associated with them is null value.In Fig. 4, illustrate this ability, Fig. 4 shows four time slots distributing to synthetic R-primary colors, wherein when for all image pixels, when SSL equipment 322,324 and 326 the 1-bit plane 475 being associated comprise null value by these SSL device shutdowns.The in the situation that of this ability not, during distributing to 4 time slots of this synthetic R-primary colors,

SSL equipment

322, 324 and 326 work period with suitable is connected to (such as in Fig. 1 a and 1b respectively in the situation of illustrated optical projection system based on lamp and the optical projection system based on SSL), but will be in off state in all SLM equipment 310 pixels of this 4-time slot duration, this typically passes through projection optical equipment's transmission on projected image 350 by the photon leakage that makes to be associated with SLM equipment 310, this will make maximum black level deteriorated, this is deteriorated and then will make the contrast level of projected image 350 deteriorated.In fact, when space 1-bit field is that the ability that the multiplexing functional block 360 of null value time stage is inserted BLK-primary colors adaptively reduces photon leakage level during by the 1-bit field in the type for all pixels, and result will significantly be improved black level and the contrast of display system 300.In fact, this self adaptation RLK-primary colors of stepped multiplexing functional block 360 inserts ability the maximum black level that makes display system 300 is high enough to realize up to 100, the sequential contrast level of 000:1, i.e. any all irrealizable sequential contrast levels of front projection system of working as.

Described the feature operation of the optical projection system 300 that is incorporated to the time-multiplexed system of classification polychrome primary colors of the present invention, discussion below provides the additional detail of this design specification and the operation of main functional blocks (being stepped multiplexing functional block 360) thereof.In order to realize the ability of summarizing in previous embodiment, stepped multiplexing functional block 360 realizes following character:

A) level independence--in each level of this classification, control independently an only character (for example, color gamut, white point or brightness) of display system 300.In the level 1 of this classification, revise from this colour gamut of SSL equipment 322,324 and 326 to the shade mapping that synthesizes target color gamut color primary colors.In level 2, revise the white point of synthetic target color gamut.In level 3, revise from this colour gamut of SSL equipment 322,324 and 326 and shine upon to the illumination of synthetic target color gamut.

B) level consistency--when disposing the character at upper level place of this classification, will not change character fixing in lower level.For example, when changing white point in level 2, do not change the color gamut realizing in level 1.

C) process consistency--in each level of this classification, use identical processing module, but there is different inputs to affect the heterogeneity of display system 300.Each level comprises time-modulation and brightness processed module.

These character of stepped multiplexing functional block 360 provide the desired linear convergence of head for target parameter (for example target color gamut, white point or brightness) and in the situation that not affecting other parameters, have only disposed a parameter at every turn, and this can simplify the calibration of display system 300 widely.

With reference to Fig. 3, the processing module utilization of stepped multiplexing functional block 360 is by the following parameter representing with lower label:

(a) r=( r _x, r _y), g=( g _x, g _y) and b=( b _x, b _y) represent the chromaticity coordinate (input 362) of the color primary colors 440 of SSL equipment 322,324 and 326;

(b) l _r, l _gwith l _brepresent the full work period brightness (input 362) of SSL equipment 322,324 and 326;

(c) R=( r _x, r _y), G=( g _x, g _y) and B=( b _x, b _y) represent the chromaticity coordinate (input 364) of target color gamut color primary colors 460;

(d) l _r, l _gwith l _brepresent the required brightness of target color gamut color primary colors 460;

(e) W=( w _x, w _y) represent the chromaticity coordinate (input 364) of the target white point of display system 300;

(f) l _wrepresent the required brightness (input 364) of the target white point of display system 300; And

(g) α, βwith γrepresent to distribute to each SSL equipment 322,324 and 326 to realize the mark of the required color slot cycle 420 of the desired target color gamut (input 363) of display system 300 and white point brightness (inputting 364).

Note, lowercase refers to the color of SSL equipment, and capitalization refers to synthetic color, and institute's the colorful one brightness is by make lower target of color names lrepresent.

Level 0; Calibration and initialization

During the initial calibration of display system 300, will measure SSL equipment 322,324 and 326 color primary colors 440(SSL colour gamuts) chromaticity coordinate r, gwith band brightness l _r, l _gwith l _b, and during the initialization of display system 300, this chromaticity coordinate and brightness are offered to stepped multiplexing functional block 360 as input 362.During the initialization of display system 300, also input 363 and input 364 are offered to stepped multiplexing functional block 360, wherein input the chromaticity coordinate of 363 transmission target color gamut color primary colors r, gwith band brightness l _r, l _gwith l _b, input 364 transmits desired white point chromaticity coordinate wand brightness l _w.During the initialization of display system 300, the value of input 362,363 and 364 will be stored into stepped multiplexing functional block 360 inside to use during subsequent operation.

Level 1 is processed: colour gamut is controlled

The chromaticity coordinate value that the outside of use SSL equipment 322,324 and 326 color primary colors 440 provides r, gwith b(input 362), stepped multiplexing functional block 360 determines that interior each the SSL equipment 322,324 and 326 of connecting of each color slot cycle 420 is to synthesize target color gamut color primary colors r, gwith bthe number of the SSL work period 430 of (input 363)

Figure 2009801400210100002DEST_PATH_IMAGE001

,

with .Total number and the fractional value of SSL work period 430 based in each color slot cycle 420 α, βwith γdetermine the value of each color slot cycle 420 ,

with

.For example,, if each color slot cycle 420 comprises 16 SSL work periods 430 and value α _gits expression of=0.1875(distribute to the green primary colors of synthesized, during it, connect red SSL so that the mark of the color slot cycle 420 of the green primary colors of synthetic target color gamut),

.In this example, if β _gits expression of=0.875(distribute to the green primary colors of synthesized, during it, connect green SSL so that the mark of the color slot cycle 420 of the green primary colors of synthetic target color gamut), .Similarly, if in this example γ _gits expression of=0.0625(distribute to the green primary colors of synthesized, during it, connect blue SSL so that the mark of the color slot cycle 420 of the green primary colors of synthetic target color gamut),

.Therefore in this example, by distribute to synthesized green ( g) during three (3) individual SSL work periods 430, connect red SSL equipment 322 simultaneously during the color slot cycle 420 of color primary colors, during ten four (14) individual SSL work periods 430, connect green SSL equipment 324 and during one (1) individual SSL work period 430, connect blue SSL equipment 326 synthesize target color gamut green ( g) primary colors.

Alternatively, such as each color slot cycle 420 therein, comprise in the previous example of 16 SSL work periods 430, the designated value of SSL work periods 430 number of given each color slot cycle 420, can be used 4-position pulse-width modulation (PWM) technology respectively directly according to time-multiplexed ratio simultaneously α _g, β _gwith γ _gbinary value carry out determined value

Figure 2009801400210100002DEST_PATH_IMAGE007

,

with .

The time-multiplexed color time slot 420 creating in level 1 will form synthesize primary colors 460 r, g, b, referring to the diagram of Fig. 4, during these time-multiplexed color time slots 420 by connect simultaneously SSL equipment 322,324 and 326 color primary colors 440 r, g, breach the time remaining time

,

with

.The time remaining time simultaneously ,

with color processing module by stepped multiplexing functional block 360 is determined, and resulting synthetic primary colors 460 r, g, bbrightness will be in the brightness module in stepped multiplexing functional block 360 determine.Below provided the detailed functions of the time-modulation module of stepped multiplexing functional block 360 and brightness module has been described.These two modules typically will be embodied as the high speed logic of a part for stepped multiplexing functional block 360.

time-modulation module: as previously explained, for synthetic target color gamut color primary colors 460 r, g, b, will with ratio { α, beta, gamma } in time combination S SL equipment 322,324 and 326 color primary colors 440 r, g, b, thereby their combined light flux produces required target color gamut color chromaticity coordinate.In equation below (1), illustrated for the synthetic equation of this time-modulation:

（1.1）

（1.2）

（1.3）

For each synthetic color primary colors 460 r, g, bunknown ratio α, β, γ, solve independently each in these equatioies.In order for example to find, for specific color primary colors (, green target color gamut primary colors g) ratio α, β, γ, the color primary colors 440 based on SSL equipment 322,324 and 326 r, g, bchromaticity coordinate use equation (1.2).The color primary colors 440 that SSL equipment 322,324 and 326 generates r, g, bto have to which combine to produce the synthetic primary colors 460 of target r, g, bcolourity ( x,y) coordinate.For example,, for synthetic green target color gamut primary colors g, by r _x , g _x , b _xthe ratio of the SSL equipment 322,324 representing and 326 x-coordinate must add up to green target color gamut x-coordinate g _x.Equally, y-coordinate r _y , g _y , b _yratio must add up to target color gamut y-coordinate g _y.Find these ratios need to solve about α _g , β _g , γ _gequation set (2).

（2.1）

（2.2）

（2.3）

Can with similar equation set find respectively ratio for red and blue target color gamut primary colors α _r , β _r , γ _rand α _b , β _b , γ _b.

When the calculating providing according to equation (1) α, beta, gammaratio combines while having the SSL equipment 322,324 of iso brightness and 326 set in time, they will produce target color gamut primary colors chroma point.Because the brightness of each SSL equipment is probably different, so ratio α, beta, gammamust adjust in proportion to consider by l _r , L _g , L _bthe difference of the SSL equipment 322,324 representing and 326 brightness.For example, in order to consider the difference of the brightness of SSL equipment 322,324 and 326, by have to according to formula (3) below revise cause green target color gamut primary colors ratio α _g , β _g , γ _g.

（3.1）

（3.2）

（3.3）

Can use similar equation set for red and blue target color gamut primary colors.Note, in order to generate green target color gamut primary colors G, value β _gconventionally will compare α _gwith γ _gmuch bigger, this be because G from g much closer and from away from r and b many.Similarly, in order to generate red target color gamut primary colors R, value α _rconventionally will compare β _rwith γ _rmuch bigger, this be because R from r much closer and from away from g and b many.Similarly, in order to generate blue target color gamut primary colors B, value γ _bconventionally will compare α _bwith β _bmuch bigger, this be because B from b much closer and from away from r and g many.

As previously explained, for service time in practice ratio α, beta, gamma, this rate conversion must be become to real time value.This conversion will by by ratio α, beta, gammanormalize to the maximum in these three values and then the value obtaining is multiplied by the size of the color time slot 420 of expressing according to the number of SSL work period 430 t _slotcomplete.Result be connect will have in color time slot 420 each SSL equipment 322,324 and 326 with synthesize each target color gamut primary colors 460 r, G, Bthe number of SSL work period 430.For example,, for synthetic green target primary colors g, work period turn-on time when can calculate SSL equipment 322,324 and 326 as shown in equation (4) below, its by

,

,

represent.

（4.1）

（4.2）

（4.3）

Red rtarget primary colors and blueness bthe synthetic required time-multiplexed ratio of target primary colors α, beta, gammato specify by similar equation set.Will simultaneouslytime-multiplexed ratio α, beta, gammanormalize to suc as formula the maximum in three values of appointment in (4) be intended to utilize color primary colors 440 r, g, bsimultaneity to the brightness of display system 300 is maximized.The normalization constraint that equation (2.3) is set forth typically by the multiplexing ratio of setup times α, beta, gamma, make the summation of these three ratios be set to unit value, this unit value presuppose color primary colors 440 r, g, bsequential time multiplexing and in fact do not consider color primary colors 440 r, g, bsimultaneity.On the other hand, equation (4) by the time-multiplexed ratio of progressive normalization α, beta, gammabe incorporated to color primary colors 440 r, g, bsimultaneity, to these ratios are modified as to simultaneously time-multiplexed ratio.As the normalization result of equation (4), each time-multiplexed ratio α, beta, gammarelative value will increase in proportion, make the maximum of these ratios be set to unit value.The effect that equation (4) obtains is, for example, is distributing to synthetic green tint primary colors gduration of color time slot 420 in, will connect all SSL equipment 322,324 and 326, although each SSL equipment is in different time service cycle places, this green primary colors simultaneously gto in the whole duration of color time slot 420, be switched on.As a result, all SSL equipment 322,324 and 326 combined light flux have contribution by the luminous flux to resulting each synthetic primary colors.By contrast, if directly with color order mode use SSL equipment 322,324 and 326 this color primary colors 440 that generate r, g, b, in the situation in the optical projection system based on SSL as shown in Fig. 1 b, only the luminous flux of indivedual SSL equipment has contribution by the brightness to display system.

Except increasing the attainable brightness of display system 300, this color primary colors 440 of describing in first previous paragraphs r, g, btime time-multiplexed will cause SSL equipment 322,324 and 326 by the high-caliber work period operation of the peak power combination with reduced levels to realize the white point brightness of the specified desired level of outside input 364, this so will cause the net increase (when operating with higher duty cycle with compared with low peak power level, representing greater efficiency) of the energy conversion efficiency of display system 300 SSL apparatus characteristic.

The SSL equipment 322,324 that equation (4) provides and work period turn-on time be nonce 326 time, and as by explaining in the following discussion, by having to, adjust required brightness and the colourity of to input 364 specified values based on outside, considering display system 300 white points.

brightness module: in the level 2 of stepped multiplexing functional block 360, system white point is set to the specified value of outside input 364.Each the synthetic target primary colors 460 creating in brightness module computation levels 1 r, G, Bbrightness time, initialization level 2.As shown in equation (5) below, will use the time ratio that formula (3) sets forth α, beta, gammacome in computation levels 1 to create three synthetic primary colors 460 r, G, Bin each the brightness obtaining, its by l _r , L _g , L _brepresent.

（5.1）

（5.2）

（5.3）

Level 2: white point is controlled

The same time modulation module using in level 1 will also for level 2, but be applied to synthesize target color gamut primary colors 460 r, G, Brather than the color primary colors 440 of SSL equipment 322,324 and 326 r, g, b.In level 2, by synthetic single white colour gamut point rather than synthesize three indivedual color primary colors colour gamut points of target color gamut.As mentioned before, the ratio of required time duration that is necessary to determine new primary colors is to create desired white point.The brightness of the white point calculating by identical brightness calculation subsequently, and the therefore brightness of calculation display system 300.

time-modulation: the time-modulation in this and level 1 is similar, but current this module use synthetic target primary colors 460 chromaticity coordinate r, G, Band brightness l _r , L _g , L _b.At this level place, sequentially time-multiplexed synthetic primary colors 460 is inputted to target white point colourity and the brightness of 364 appointments by outside with generation.In order to realize this point, by have to by realize the mode of inputting the white point colourity W of 364 appointments by outside and revise SSL equipment 322,324 and 326 color primary colors 440 r, g, bcontribution proportion.

In order to create target white point W, the synthetic primary colors of three target color gamut r, G, B460 will have to ratio α _w , β _w , γ _wcombination, thereby when sequentially time-multiplexed, produce the desired white point of being inputted 364 appointments by outside.The synthetic colour gamut primary colors of equation below (6) foundation r, G, Bexpression target white point colourity.

（6）

Determine to create the required ratio of white point α _w , β _w , γ _wneed to for three unknown quantitys α _w , β _w , γ _wsolve equation (6).With similar above, the chromaticity coordinate of based target colour gamut primary colors is used three equatioies.Target color gamut primary colors must with they produce white point colourity ( x,y) mode of coordinate combines.By r _x , G _x , B _xthe ratio of x-coordinate of the target color gamut primary colors that represents must add up to the x-coordinate of white point w _x.Equally, y-coordinate r _y , G _y , B _yratio must add up to the y-coordinate of white point w _y.Find these ratios need to for α _w , β _w , γ _wsolve equation group (7).

（7.1）

（7.2）

（7.3）

Solving above equation set (7) afterwards, resulting ratio α _w , β _w , γ _wneed to adjust in proportion in case consider in level 1 target color gamut primary colors synthetic and that provided by equation (5) r, G, Bthe brightness realizing l _r , L _g , L _bdifference, as shown in formula (8).

（8.1）

（8.2）

（8.3）

Once use formula group (7) and (8) determined synthetic target color gamut r, G, B sequentiallytime-multiplexed ratio α _w , β _w , γ _wto create required target white point w(by outside input 364, being specified), need to by be modified in SSL equipment 322,324 that level 1 place creates and 326 this color primary colors r, g, b simultaneouslytime-multiplexed ratio α, beta, gammarealize these ratios.In order to realize this point, will have to according to formula (9) to (11) by suitable white point ratio α _w , β _w , γ _wto synthetic each target color gamut color primary colors r, G, Brequired simultaneouslytime-multiplexed ratio { α, beta, gamma } set is adjusted in proportion.

（9.1）

（9.2）

（9.3）

（10.1）

（10.2）

（10.3）

（11.1）

（11.2）

（11.3）

By formula (9) to (11) appointment simultaneouslytime-multiplexed ratio α, beta, gammaset is synthetic white point brightness and the required finally time ratio through adjusting of colourity of being inputted 364 appointments by outside.For each synthetic target color gamut primary colors r, G, B, will simultaneouslytime-multiplexed ratio α, beta, gammathese end values work period turn-on time when converting each SSL equipment 322,324 and 326 to, its by ,

,

,

, ,

and

,

,

represent, as illustrated in equation (4).

brightness module: with needs understand target color gamut primary colors synthetic in level 1 r, G, Bbrightness l _r, l _gwith l _bthe level realizing similar to set up the situation of level 2, will be necessary understand white point synthetic in level 2 wthe level realizing of brightness to set up level 3.As shown in equation (12), will use sequential time ratio α _w , β _w , γ _wand by l _r , L _g , L _bthe brightness realizing of the target color gamut primary colors that represents calculate by l _wthe brightness of the white point representing.

（12）

Level 3: brilliance control

In the level 3 of stepped multiplexing functional block 360, can by adjust in proportion sequential time ratio α _w , β _w , γ _wcarry out the white point brightness of continuous setup display system 300.Can be adjusted in proportion the brightness of the end calculating of level 2 l _wso that by the brightness adjustment of display system 300 to any expectation by l _refthe reference brightness representing, this reference brightness can be inputted 364 by outside subsequently and specify.In order to realize this point, will have to calculate scale factor as shown in equation (13) s.

（13）

Use the scale factor of equation (13) appointment s, time-multiplexed ratio when adjusting in proportion from level 1 α _r , β _r , γ _r, α _g , β _g , γ _gand α _b , β _b , γ _bto produce required target brightness value l _ref.For example, formula (14) shows when how to adjust green primary colors in proportion time-multiplexed ratio to produce required target brightness value l _ref.Formula for red target color gamut primary colors and blue target color gamut primary colors is similar.

（14.1）

（14.2）

（14.3）

As according to the description above of the function detail of each level of the stepped multiplexing functional block 360 of display system 300 of the present invention and significantly, stepped multiplexing functional block 360 time-multiplexed parameter and do not setover or change by any way the gray value of view data when changing SSL equipment 322,324 and 326, has realized the strict of the colour gamut of display system 300 and white point brightness and colourity has been controlled in real time.This ability is crucial for realizing the highest color and brightness uniformity in flush system multi-projector display system (referring to United States Patent (USP) the 7th, 334, No. 901).In these systems, outside

input

363 and 364 will offer stepped multiplexing functional block 360 by external function block, the function of external function block is that first sensing comprises each color and the brightness in a plurality of projecting apparatus of flush system multi-projector display system, secondly and for each projecting apparatus, generate leap is comprised to all a plurality of projecting apparatus of this flush system multi-projector display system realize and maintain the color of desired level and the input of brightness uniformity 363 and 364(referring to United States Patent (USP) the 7th, 334, No. 901).

The colour gamut of real-time control display system 300 being realized by stepped multiplexing functional block of the present invention 360 and the aforementioned ability of white point brightness and colourity can also for compensate for typical with operating temperature changes and SSL ageing equipment is associated color and intensity deviation (referring to United States Patent (USP) the 7th, 334, No. 901).In the application of the type, be coupled to detect by SSL equipment 322,324 and 326 colors that generate and brightness and be coupled in SLM equipment 310 (referring to United States Patent (USP) the 7th, 334, No. 901) optical sensor will generate outside input 362, this outside input 362 and then time-multiplexed parameter when will use to adjust SSL equipment 322,324 and 326 by stepped multiplexing functional block 360, as explained in first previous paragraphs, so that the color of compensation SSL equipment 322,324 and 326 and the change of brightness and maintain brightness and the colourity of synthetic primary colors.In this case, stepped multiplexing functional block 360 will by change simultaneously time-multiplexed ratio α, beta, gammavalue (as previously explained) this primary colors of adjusting SSL equipment 322,324 and 326 to the mapping of primary colors of being inputted the target color gamut of 363 appointments by outside, to brightness and the colourity of synthetic primary colors are maintained to the value place that is inputted 362 appointments by outside.

In a word, projection display systems 300 based on SSL of the present invention is incorporated to stepped multiplexing functional block 360, and this stepped multiplexing functional block 360 is by the SSL equipment operating of synchronizeing with the time operation of SLM equipment 310 time-multiplexed following operation and the feature performance benefit realized in the time of the work period:

1. the ability of the target color gamut of the synthetic any expectation that comprises a plurality of synthetic primary colors, the plurality of synthetic primary colors is completely contained in this colour gamut that the color primary colors by SSL equipment forms;

2. in synthetic colour gamut, be optionally incorporated to white primary and/or black primary colors to improve the color saturation of display system and the ability of contrast level;

3. the time time slot allocation that optionally makes synthetic primary colors interweaves to reduce the projected image speckle that may be caused by the contiguous sequential time time slot of same hue primary colors and the ability of pseudomorphism;

4. the mapping that control is in real time synthesized colour gamut from this colour gamut of SSL equipment to target is so that the ability that may change and maintain the stability of target color gamut brightness and colourity this colour gamut of compensation SSL equipment;

5. in the situation that not setovering or change view data gray value, synthesize the target white point brightness of any expectation and the ability of colourity;

6. time-multiplexed and do not setover or change view data gray value and come strictly to control in real time the white point brightness of display system and the ability of colourity in the time of the work period by changing SSL equipment operating;

7. realize and having than using the higher levels of brightness of display system of SSL and the ability of energy conversion efficiency based on conventional color order scheme; And

8. realize and having than depending on that operating and controlling image gray value is to adjust the ability of contrast, dynamic range, energy conversion efficiency and total brightness that the display system (the no matter display system based on lamp or the display system based on SSL) of its colour gamut or color point characteristic is higher.

In above detailed description in detail, with reference to specific embodiment of the present invention, the present invention has been described.Yet, will be apparent that: can to the present invention, carry out various modifications and change in the situation that do not depart from wider spirit and scope of the present invention.Therefore, design details and accompanying drawing should be regarded as illustrative and nonrestrictive.Person of skill in the art will appreciate that can by from for the different mode of the above-mentioned embodiment of preferred embodiment, realize part of the present invention.For example, person of skill in the art will appreciate that, the projection display systems based on SSL 300 that is incorporated to stepped multiplexing functional block 360 of the present invention can be used for following many versions and realize: the number of the SSL equipment using, the number of the color primary colors being associated with used SSL equipment, the particular design details of projection optical equipment 340, the specific detail of illuminating and optical apparatus 330, PWM conversion block 390 and with the particular design details of the interface of SLM equipment 310, the specific implementation details of stepped multiplexing functional block 360 and external interface 362, the particular design details of 363 and 364 coupling.Those skilled in the art will further recognize, in the situation that not departing from basic principle of the present invention, can carry out many changes to the details of previous embodiment of the present invention.Therefore scope of the present invention should only be indicated in the appended claims.

Claims

1. the projection display systems based on solid-state light, comprising:

A plurality of pixel illumination equipment, for a plurality of pixels of throwing light in each of a plurality of color time slots, each pixel has the controlled turn-on/off state of numeral, and described pixel illumination equipment is used solid state light emitter;

Projection optical equipment, is coupled to amplify the image being generated by described a plurality of digital controllable pixel optically;

Pulse-width modulation (PWM) piece, is coupled to described pixel illumination equipment to control the turn-on/off state of each digital controllable pixel; And

Stepped multiplexing functional block, be coupled to receive DID with a large amount of other outside inputs and so that control and synchronizing signal are offered to described a plurality of pixel illumination equipment and described pulse-width modulation (PWM) piece, its this colour gamut that compensates described solid state light emitter in response to external input signal is along with operating temperature changes and aging color and the variation of intensity deviation, so that described a plurality of digital controllable pixel generates the image in the target color gamut of described display system in response to described view data;

Wherein said stepped multiplexing functional block is carried out the processing of three levels, thus:

Controlling first of level and process in level being called as colour gamut, is synthetic target color gamut ON/OFF work period required time by what the colourity of this color primary colors of the pixel illumination equipment being provided by outside input and brightness value are mapped to the colourity of the target color gamut color primary colors being provided by outside input and brightness value calculate each pixel illumination equipment;

Control second of level and process in level being called as white point, revised for the described first ON/OFF work period when processing level and fall into a trap the pixel illumination equipment of calculating so that colourity and the brightness value of the required white point being provided by outside input to be provided; And

The 3rd processing in level of being called as brilliance control level, be further modified in for the described second ON/OFF work period when processing level and fall into a trap the pixel illumination equipment of calculating so that the brightness adjustment of the display system white point being provided by outside input to be provided.

2. the projection display systems based on solid-state light according to claim 1, wherein said stepped multiplexing functional block is coupled to accept the picture frame period signal that outside provides and the synchronizing signal that generates two lower grades, the first synchronizing signal transmits the sequential of the color time slot comprise described picture frame period, and the sequential of the second synchronizing signal ON/OFF work period when being transmitted in digital controllable pixel in each in described a plurality of color time slot.

3. the projection display systems based on solid-state light according to claim 2, wherein said a plurality of pixel illumination equipment provides a large amount of photochromic color primary colors for each pixel, and each pixel illumination equipment is electrically coupled with time of reception control signal for control in time the described turn-on/off state of each pixel of described pixel illumination equipment with the timing synchronization ground of ON/OFF work period separately in each color time slot.

4. the projection display systems based on solid-state light according to claim 3, wherein said pixel illumination equipment operates with the different ON/OFF work periods for different photochromic color primary colors and during different color slot cycles simultaneously.

5. the projection display systems based on solid-state light according to claim 4, during each in described a plurality of color time slots of the photochromic color primary colors of each pixel illumination equipment of wherein said stepped multiplexing functional block, be calculated as synthetic target white point required in the ON/OFF work period.

6. the projection display systems based on solid-state light according to claim 2, wherein said pulse-width modulation (PWM) piece is coupled to receive specifies 1-bit field, the color slot synchronization signal of each image pixel turn-on/off state and specifies the number of color slot cycle to be applied to this image pixel turn-on/off state 1-bit field, to carry out the digital control word of control figure controllable pixel.

7. the projection display systems based on solid-state light according to claim 6, wherein:

Each all provides in a large amount of photochromic color primary colors described a plurality of pixel illumination equipment, and each pixel illumination equipment is electrically coupled with time of reception control signal for control in time the turn-on/off state of each pixel illumination equipment with the timing synchronization ground of ON/OFF work period separately in each color time slot; And

The described digital control word that described stepped multiplexing functional block is coupled with the data of the 1-bit field with provide the 1-bit field of the described turn-on/off state of specifying each Pixel of Digital Image and the number of appointment color slot cycle to be transmitted with application to described pulse-width modulation (PWM) piece synchronously provides described turn-on/off state time control signal to described pixel illumination equipment.

8. the projection display systems based on solid-state light according to claim 2, wherein:

Described a plurality of pixel illumination equipment provides a large amount of photochromic color primary colors, and each pixel illumination equipment is electrically coupled to allow in each color time slot to control in time with the timing synchronization ground of ON/OFF work period separately the ON/OFF work period of described pixel illumination equipment;

Wherein said stepped multiplexing functional block is coupled to accept to specify brightness in the solid state light emitter colour gamut of each the photochromic color primary colors being generated by described a plurality of pixel illumination equipment and the external signal of colourity;

To accept to specify the brightness of color primary colors and the external signal of colourity of the target color gamut that defines described display system; And

To accept to specify the brightness of target white point and the external signal of colourity of described display system.

9. the projection display systems based on solid-state light according to claim 8, wherein said target color gamut is completely contained in described solid state light emitter colour gamut.

10. the projection display systems based on solid-state light according to claim 8, wherein said target color gamut is NTSC or HDTV display system gamut standards.

11. projection display systems based on solid-state light according to claim 8, wherein:

Described a plurality of pixel illumination equipment provides a large amount of photochromic color primary colors, and each pixel illumination equipment is electrically coupled to allow in each in a plurality of color time slots to control in time with the timing synchronization ground of ON/OFF work period separately the turn-on/off state of each pixel illumination equipment; And

Wherein said stepped multiplexing functional block be coupled be calculated as during each the color time slot with each the photochromic color primary colors being generated by described a plurality of pixel illumination equipment each color primary colors of the described target color gamut of synthetic definition required in the ON/OFF work period.

12. projection display systems based on solid-state light according to claim 11, wherein said stepped multiplexing functional block in each picture frame period by many color time slot allocation to each synthetic color primary colors.

13. projection display systems based on solid-state light according to claim 12, wherein:

Wherein said pulse-width modulation (PWM) piece is coupled to receive specifies 1-bit field, the color slot synchronization signal of each image pixel turn-on/off state and specifies color slot cycle number with application image pixel turn-on/off state 1-bit field, to control the digital control word of the state of each pixel; And

Wherein institute's allotment object color time slot transmits the value of multi-bit word of gray value of each image pixel of the described 1-bit field of use in described DID.

14. projection display systems based on solid-state light according to claim 8, wherein said color time slot comprises that many pixel illumination equipment ON/OFF work periods are to synthesize described target color gamut color primary colors.

15. projection display systems based on solid-state light according to claim 8, wherein:

Described stepped multiplexing functional block makes the color time slot interleaving of distributing to target color gamut color primary colors to reduce the caused time speckle of excessive time adjacency by distributing to the color time slot of identical synthetic color primary colors.

16. projection display systems based on solid-state light according to claim 8, wherein:

Described pulse-width modulation (PWM) piece is coupled to receive specifies 1-bit field, the color slot synchronization signal of each image pixel turn-on/off state and specifies the number of color slot cycle with application image pixel turn-on/off state 1-bit field, to control the digital control word of the reflective condition of each pixel; And

Described stepped multiplexing functional block is turn-offed all pixel illumination equipment during by the color time slot distributing to any synthetic color primary colors being associated with the 1-bit field that comprises the null value of each image pixel and is inserted black primary colors.

17. projection display systems based on solid-state light according to claim 1, wherein said stepped multiplexing functional block comprises two processing modules, thus:

In first processing module that is called as time-modulation module of each level, calculating pixel lighting apparatus be synthetic target color gamut ON/OFF work period required time; And

In being called as the second processing module of brightness module, when revising the calculating of pixel illumination equipment, the ON/OFF work period is with the brightness of combining display system white point.

18. projection display systems based on solid-state light according to claim 1, wherein:

Described stepped multiplexing functional block is carried out three and is processed levels, each process level an only character of controlling described display system be aspect target color gamut, white point or brightness be level independently;

By not changing the character that is arranged at higher position reason level place of described display system, the second and the 3rd each that process in level is that level is constant; And

Each processes level is to process constantly, and wherein each is processed level and uses two identical processing modules, but wherein different input is for affecting the heterogeneity of described display system.

19. projection display systems based on solid-state light according to claim 1, wherein said stepped multiplexing functional block is carried out three and is processed level, wherein said colour gamut is controlled and white point is controlled level each is all made these ON/OFF the maximum in the work period be set to the maximum of the described projection display systems based on solid-state light when increasing in proportion the calculating of pixel illumination equipment the ON/OFF work period, and makes the brightness maximization of described display system.

20. projection display systems based on solid-state light according to claim 1, wherein said processing level is only by adjusting the ON/OFF work period of pixel illumination equipment and not setovering or change view data gray value and realize the control to display system colour gamut and white point brightness and colourity.

21. projection display systems based on solid-state light according to claim 1, wherein, due to the ON/OFF work period operation pixel illumination equipment with higher, therefore described processing level can realize than directly use the higher levels of brightness of display system and the energy conversion efficiency of solid-state light equipment in color order mode the described projection display systems based on solid-state light.

22. projection display systems based on solid-state light according to claim 1, wherein said pixel illumination equipment comprises the imaging device of solid state light emitter and reflection type, and described imaging device comprises a plurality of micro mirrors or a plurality of liquid crystal cells of the reflective condition that is coupled to control in time its each pixel.

23. projection display systems based on solid-state light according to claim 1, wherein the color primary colors of objective definition colour gamut comprises at least redness, green, blue cyan, magenta and yellow.

24. projection display systems based on solid-state light according to claim 1, wherein:

Described stepped multiplexing functional block is coupled to accept the picture frame period signal that outside provides and the synchronizing signal that generates two lower grades, the first synchronizing signal transmits the sequential of the color time slot comprise picture frame period and the sequential of the second synchronizing signal ON/OFF work period when being transmitted in pixel illumination equipment in each in described a plurality of color time slot, and during each the color time slot with each the photochromic color primary colors being generated by described a plurality of pixel illumination equipment, be calculated as required described ON/OFF work period while of each color primary colors of the described target color gamut of synthetic definition, and

During each in described a plurality of color time slots of the photochromic color primary colors of each pixel illumination equipment of described stepped multiplexing functional block, be calculated as synthetic required described ON/OFF work period while of target white point; And

Described stepped multiplexing functional block is given many color time slot allocation synthetic target white point during described picture frame period, and these many color time slots are enough to allow to control the saturation levels of each synthetic object color component primary colors.

25. projection display systems based on solid-state light according to claim 1, realize color and brightness uniformity for multi-projector array display system to cross over shown image in a large number.

26. 1 kinds of methods of using in the projection display systems based on solid-state light, the described projection display systems based on solid-state light has: a plurality of pixel illumination equipment, for a plurality of pixels of throwing light in each of a plurality of color time slots, each pixel has the controlled turn-on/off state of numeral, and described pixel illumination equipment is used solid state light emitter; And projection optical equipment, being coupled optically to amplify the image being generated by described a plurality of digital controllable pixel, described method comprises:

Control first of level and process in level being called as colour gamut, by the colourity of this color primary colors of the pixel illumination equipment being provided by outside input and brightness value are mapped to by outside input, provided and in response to external input signal, for the operating temperature with described solid state light emitter, change and the colourity of the target color gamut color primary colors that the aging color being associated and intensity deviation are proofreaied and correct and brightness value calculate each pixel illumination equipment is synthetic target color gamut ON/OFF work period required time;

Control second of level and process in level being called as white point, be modified in for the described first ON/OFF work period when processing level and fall into a trap the pixel illumination equipment of calculating so that colourity and the brightness value of the required white point being provided by outside input to be provided; And

The 3rd processing in level of being called as brilliance control level, be modified in for the described second ON/OFF work period when processing level and fall into a trap the pixel illumination equipment of calculating so that the brightness adjustment of the display system white point being provided by outside input to be provided.

27. methods according to claim 26, wherein:

Each process level an only character of controlling described display system be aspect target color gamut, white point or brightness be level independently;

By not changing the character that is arranged on higher position reason level place of described display system, the second and the 3rd each that process in level is that level is constant; And

28. methods according to claim 27, wherein:

In first processing module that is called as time-modulation module of each level, calculating pixel lighting apparatus be synthetic described target color gamut ON/OFF work period required time; And

29. methods according to claim 26, wherein colour gamut is controlled and white point is controlled level each is all made these ON/OFF the maximum in the work period be set to the maximum of the described projection display systems based on solid-state light when increasing in proportion the calculating of pixel illumination equipment the ON/OFF work period, and makes the brightness maximization of described display system.